1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portlet.rss.util;
24  
25  import com.liferay.portal.kernel.util.Time;
26  import com.liferay.portal.kernel.webcache.WebCacheException;
27  import com.liferay.portal.kernel.webcache.WebCacheItem;
28  
29  import com.sun.syndication.feed.synd.SyndFeed;
30  import com.sun.syndication.io.SyndFeedInput;
31  import com.sun.syndication.io.XmlReader;
32  
33  import java.net.URL;
34  
35  /**
36   * <a href="RSSWebCacheItem.java.html"><b><i>View Source</i></b></a>
37   *
38   * @author Brian Wing Shun Chan
39   */
40  public class RSSWebCacheItem implements WebCacheItem {
41  
42      public RSSWebCacheItem(String url) {
43          _url = url;
44      }
45  
46      public Object convert(String key) throws WebCacheException {
47          SyndFeed feed = null;
48  
49          try {
50  
51              // com.liferay.portal.kernel.util.HttpUtil will break the connection
52              // if it spends more than 5 seconds looking up a location. However,
53              // German umlauts do not get encoded correctly. This may be a bug
54              // with commons-httpclient or with how FeedParser uses
55              // java.io.Reader.
56  
57              // Use http://xml.newsisfree.com/feeds/29/629.xml and
58              // http://test.domosoft.com/up/RSS to test if German umlauts show
59              // up correctly.
60  
61              /*Reader reader = new StringReader(
62                  new String(HttpUtil.URLtoByteArray(_url)));
63  
64              channel = FeedParser.parse(builder, reader);*/
65  
66              SyndFeedInput input = new SyndFeedInput();
67  
68              feed = input.build(new XmlReader(new URL(_url)));
69          }
70          catch (Exception e) {
71              throw new WebCacheException(_url + " " + e.toString());
72          }
73  
74          return feed;
75      }
76  
77      public long getRefreshTime() {
78          return _REFRESH_TIME;
79      }
80  
81      private static final long _REFRESH_TIME = Time.MINUTE * 20;
82  
83      private String _url;
84  
85  }